Working condition judgment method, and efficiency monitoring method and system for water-pump and water-turbine generator set

Abstract

The invention discloses a working condition judgment method, and efficiency monitoring method and system for a water-pump and water-turbine generator set. Whether the set is in a water turbine working condition or a water pump working condition is judged according to volute flow, tail water flow and power collected by a power sensor, the operation efficiency of the set is calculated according to corresponding parameters under different working conditions, the working condition of the set is effectively judged, and the operation efficiency of the set can be monitored in real time. According to the working condition judgment method, and the efficiency monitoring method and system, the parameters required for calculating the operation efficiency under the two working conditions can be synchronously measured, so that the operation efficiency under the two working conditions can be rapidly obtained; the methods and the system can adapt to data collection of the reversible water-pump and water-turbine generator set under the complex field environment; meanwhile, the methods and the system can be applied to efficiency monitoring of the water-turbine generator set; and the defects that an existing efficiency monitoring technology is single in function and poor in universality are overcome to a certain extent.

Description

technical field [0001] The invention belongs to the technical field of generator monitoring, and in particular relates to a working condition determination method, an efficiency monitoring method and a system of a reversible water pump hydraulic generator set. Background technique [0002] In the pumped storage power station, the reversible pump turbine generator is used as the energy conversion device of the pumped storage power station, and its conversion efficiency is an important technical index reflecting the performance of the unit. [0003] After the installation and commissioning of the existing reversible pump hydro-generator set, the efficiency and output characteristics of the unit need to be tested and evaluated. In the daily operation process, the reversible water pump turbine generator has two working conditions, that is, the turbine working condition and the water pump working condition. There is no corresponding method in the current technology to automatical...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for judging the working condition of a reversible pump-hydro-generator set, an efficiency monitoring method and a system to solve the problem that the prior art cannot determine the working condition of a reversible pump-hydro-generator set in real time and monitor its operation in real time efficiency problem

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